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Coolant Disappearing in My 2018 Escape 1.5L EcoBoost

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Mike T. · rep 0 · May 25, 1:37 AM · 1 replies · solved · Question

Vehicle: 2018 Ford Escape SE

I've noticed a persistent issue with my 2018 Ford Escape SE, which has the 1.5L EcoBoost engine. It seems to be consistently low on coolant. I've topped it off a few times over the past couple of months, but the level keeps dropping back down.

There are no visible leaks on my driveway, nor can I see any obvious puddles or drips under the hood. I'm really concerned this might be related to the known coolant intrusion issues that some of these EcoBoost engines are famous for.

Has anyone else experienced this with their 2018 Escape 1.5L? What specific symptoms or things should I be looking for to confirm if it's the dreaded coolant intrusion problem? I want to be prepared before I take it to the dealer.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 1:37 AM

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ClearTheCode admin answer:

Coolant loss without external leaks in the 1.5L EcoBoost engine (found in your 2018 Ford Escape) is a known and serious concern, often indicative of coolant intrusion into the cylinders or oil system.

  1. Identify Symptoms: Look for a rough idle, misfires (which might trigger a 'Check Engine' light with P030X codes, e.g., P0301 for cylinder 1 misfire), white smoke from the exhaust (especially on startup or under load), or a milky appearance in the engine oil (check the dipstick or oil fill cap). You might also notice a sweet smell from the exhaust.
  2. Causes: The primary cause is a design flaw in the engine block (specifically, the open-deck design) that can lead to cracks or porosity, allowing coolant to leak into the combustion chambers or oil passages. This can lead to significant engine damage if not addressed promptly.
  3. Ford's Response: Ford has issued customer satisfaction programs and extended warranties for certain models and engine configurations related to this issue (e.g., Customer Satisfaction Program 19B37). There have also been TSBs and even recalls in some markets, though specific actions can vary by VIN and region. It's crucial to check with a Ford dealer about any applicable programs for your vehicle.
  4. When to See a Shop: If you suspect coolant intrusion, take your vehicle to a Ford dealership or a trusted mechanic immediately. Continued driving can lead to catastrophic engine failure. Diagnostics will typically involve a cooling system pressure test, cylinder leak-down test, and potentially a borescope inspection of the cylinders. Early detection can sometimes lead to a repair (like head gasket replacement or engine block repair), but often a full engine replacement is necessary.
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